During one month 1530 employees in 446 teams cycled 444,377 km to work. That was the Bike to Work Summer Challenge of 2018, which ran from 23 May until 20 June. The distance covered by bike is comparable to 11 times around the circumference of the world. 429 new participants got on their bike for the competition. All participants together ensured that there was 68 ton less CO2-emission. Moreover they turned up for work fit, healthy and without the stress caused by traffic jams.